US6256394B1
(en)
*
|
1996-01-23 |
2001-07-03 |
U.S. Philips Corporation |
Transmission system for correlated signals
|
US6301357B1
(en)
*
|
1996-12-31 |
2001-10-09 |
Ericsson Inc. |
AC-center clipper for noise and echo suppression in a communications system
|
KR100233463B1
(en)
*
|
1997-03-07 |
1999-12-01 |
윤종용 |
Apparatus and method for noise cancellation
|
JP3396393B2
(en)
*
|
1997-04-30 |
2003-04-14 |
沖電気工業株式会社 |
Echo / noise component removal device
|
JP3541339B2
(en)
|
1997-06-26 |
2004-07-07 |
富士通株式会社 |
Microphone array device
|
US6097943A
(en)
*
|
1997-07-02 |
2000-08-01 |
Telefonaktiebolaget L M Ericsson |
Application bound parameter storage
|
US6108412A
(en)
*
|
1997-10-07 |
2000-08-22 |
Nortel Networks Corporation |
Adaptive echo cancelling system for telephony applications
|
US6031908A
(en)
*
|
1997-11-14 |
2000-02-29 |
Tellabs Operations, Inc. |
Echo canceller employing dual-H architecture having variable adaptive gain settings
|
US6181793B1
(en)
*
|
1997-11-14 |
2001-01-30 |
Tellabs Operations, Inc. |
Echo canceller employing dual-H architecture having improved coefficient transfer
|
US6240180B1
(en)
*
|
1997-11-14 |
2001-05-29 |
Tellabs Operations, Inc. |
Echo canceller employing dual-H architecture having split adaptive gain settings
|
US6028929A
(en)
*
|
1997-11-14 |
2000-02-22 |
Tellabs Operations, Inc. |
Echo canceller employing dual-H architecture having improved non-linear echo path detection
|
US6256384B1
(en)
*
|
1997-12-02 |
2001-07-03 |
Telefonaktiebolaget Lm Ericsson (Publ) |
Method and apparatus for cancelling echo originating from a mobile terminal
|
US6278377B1
(en)
|
1999-08-25 |
2001-08-21 |
Donnelly Corporation |
Indicator for vehicle accessory
|
US6505057B1
(en)
*
|
1998-01-23 |
2003-01-07 |
Digisonix Llc |
Integrated vehicle voice enhancement system and hands-free cellular telephone system
|
US6549627B1
(en)
*
|
1998-01-30 |
2003-04-15 |
Telefonaktiebolaget Lm Ericsson |
Generating calibration signals for an adaptive beamformer
|
JP3267556B2
(en)
*
|
1998-02-18 |
2002-03-18 |
沖電気工業株式会社 |
Echo canceller and transmitter
|
CA2245411A1
(en)
*
|
1998-08-20 |
2000-02-20 |
Mitel Corporation |
Echo canceller with compensation for codec limiting effects
|
FR2785482B1
(en)
*
|
1998-10-28 |
2000-11-24 |
France Telecom |
ACOUSTIC SYSTEM PROVIDED WITH MEANS FOR REDUCING THE ECHO RESULTING FROM ACOUSTIC COUPLING BETWEEN ITS SENSING MEANS AND ITS RESTITUTING MEANS
|
JP3774580B2
(en)
*
|
1998-11-12 |
2006-05-17 |
アルパイン株式会社 |
Voice input device
|
US6381224B1
(en)
*
|
1999-03-31 |
2002-04-30 |
Motorola, Inc. |
Method and apparatus for controlling a full-duplex communication system
|
US6563925B1
(en)
*
|
1999-04-07 |
2003-05-13 |
Ericsson Inc. |
Method and apparatus for space-time echo cancellation
|
US7146013B1
(en)
*
|
1999-04-28 |
2006-12-05 |
Alpine Electronics, Inc. |
Microphone system
|
US6678254B1
(en)
|
1999-05-03 |
2004-01-13 |
Nortel Networks Limited |
Method and communication device for optimizing echo cancellation
|
US6608904B1
(en)
|
1999-06-04 |
2003-08-19 |
Telefonaktiebolaget Lm Ericsson (Publ) |
Method and apparatus for canceling interference in a loudspeaker communication path through adaptive discrimination
|
US6480824B2
(en)
|
1999-06-04 |
2002-11-12 |
Telefonaktiebolaget L M Ericsson (Publ) |
Method and apparatus for canceling noise in a microphone communications path using an electrical equivalence reference signal
|
GB2350969B
(en)
*
|
1999-06-07 |
2003-11-05 |
Ericsson Telefon Ab L M |
Loudspeaker volume range control
|
US20030040910A1
(en)
*
|
1999-12-09 |
2003-02-27 |
Bruwer Frederick J. |
Speech distribution system
|
US8682005B2
(en)
|
1999-11-19 |
2014-03-25 |
Gentex Corporation |
Vehicle accessory microphone
|
US7120261B1
(en)
|
1999-11-19 |
2006-10-10 |
Gentex Corporation |
Vehicle accessory microphone
|
US7447320B2
(en)
*
|
2001-02-14 |
2008-11-04 |
Gentex Corporation |
Vehicle accessory microphone
|
US6473733B1
(en)
|
1999-12-01 |
2002-10-29 |
Research In Motion Limited |
Signal enhancement for voice coding
|
WO2001060029A1
(en)
*
|
2000-02-08 |
2001-08-16 |
Cetacean Networks, Inc. |
Speakerphone accessory for a telephone instrument
|
US6760435B1
(en)
*
|
2000-02-08 |
2004-07-06 |
Lucent Technologies Inc. |
Method and apparatus for network speech enhancement
|
DE10043064B4
(en)
*
|
2000-09-01 |
2004-07-08 |
Dietmar Dr. Ruwisch |
Method and device for eliminating loudspeaker interference from microphone signals
|
FR2828327B1
(en)
*
|
2000-10-03 |
2003-12-12 |
France Telecom |
ECHO REDUCTION METHOD AND DEVICE
|
GB2367730B
(en)
*
|
2000-10-06 |
2005-04-27 |
Mitel Corp |
Method and apparatus for minimizing far-end speech effects in hands-free telephony systems using acoustic beamforming
|
US7039197B1
(en)
*
|
2000-10-19 |
2006-05-02 |
Lear Corporation |
User interface for communication system
|
US7171003B1
(en)
*
|
2000-10-19 |
2007-01-30 |
Lear Corporation |
Robust and reliable acoustic echo and noise cancellation system for cabin communication
|
US6963649B2
(en)
*
|
2000-10-24 |
2005-11-08 |
Adaptive Technologies, Inc. |
Noise cancelling microphone
|
CA2436484C
(en)
*
|
2001-02-14 |
2008-01-22 |
Gentex Corporation |
Vehicle accessory microphone
|
CN1285390C
(en)
*
|
2001-03-23 |
2006-11-22 |
诺沃挪第克公司 |
Needle cannula, method of producing needle cannula and use of needle cannula
|
WO2003017718A1
(en)
*
|
2001-08-13 |
2003-02-27 |
Nanyang Technological University, Centre For Signal Processing |
Post-processing scheme for adaptive directional microphone system with noise/interference suppression
|
GB2379122B
(en)
*
|
2001-08-29 |
2003-07-16 |
Pama & Co Ltd |
Improvements in and relating to mobile phone support apparatus
|
JP4728537B2
(en)
*
|
2001-09-14 |
2011-07-20 |
株式会社ホンダアクセス |
Bluetooth communication system
|
US7027591B2
(en)
*
|
2002-10-16 |
2006-04-11 |
Ericsson Inc. |
Integrated noise cancellation and residual echo suppression
|
US7272224B1
(en)
|
2003-03-03 |
2007-09-18 |
Apple Inc. |
Echo cancellation
|
WO2005076662A1
(en)
*
|
2004-01-07 |
2005-08-18 |
Koninklijke Philips Electronics N.V. |
Audio system providing for filter coefficient copying
|
US20070183618A1
(en)
*
|
2004-02-10 |
2007-08-09 |
Masamitsu Ishii |
Moving object equipped with ultra-directional speaker
|
EP1591995B1
(en)
*
|
2004-04-29 |
2019-06-19 |
Harman Becker Automotive Systems GmbH |
Indoor communication system for a vehicular cabin
|
DK200401280A
(en)
*
|
2004-08-24 |
2006-02-25 |
Oticon As |
Low frequency phase matching for microphones
|
US7894598B2
(en)
*
|
2004-12-14 |
2011-02-22 |
Nuance Communications, Inc. |
System for limiting receive audio
|
US20060147063A1
(en)
*
|
2004-12-22 |
2006-07-06 |
Broadcom Corporation |
Echo cancellation in telephones with multiple microphones
|
US20060133621A1
(en)
*
|
2004-12-22 |
2006-06-22 |
Broadcom Corporation |
Wireless telephone having multiple microphones
|
US8509703B2
(en)
*
|
2004-12-22 |
2013-08-13 |
Broadcom Corporation |
Wireless telephone with multiple microphones and multiple description transmission
|
JP4215015B2
(en)
*
|
2005-03-18 |
2009-01-28 |
ヤマハ株式会社 |
Howling canceller and loudspeaker equipped with the same
|
JP4734127B2
(en)
*
|
2005-03-23 |
2011-07-27 |
三洋電機株式会社 |
Echo prevention circuit, digital signal processing circuit, filter coefficient setting method for echo prevention circuit, filter coefficient setting method for digital signal processing circuit, program for setting filter coefficient of echo prevention circuit, setting filter coefficient of digital signal processing circuit Program to do
|
JP4734126B2
(en)
*
|
2005-03-23 |
2011-07-27 |
三洋電機株式会社 |
Echo prevention circuit, digital signal processing circuit, filter coefficient setting method for echo prevention circuit, filter coefficient setting method for digital signal processing circuit, program for setting filter coefficient of echo prevention circuit, setting filter coefficient of digital signal processing circuit Program to do
|
JP4742226B2
(en)
*
|
2005-09-28 |
2011-08-10 |
国立大学法人九州大学 |
Active silencing control apparatus and method
|
US8345890B2
(en)
|
2006-01-05 |
2013-01-01 |
Audience, Inc. |
System and method for utilizing inter-microphone level differences for speech enhancement
|
US8744844B2
(en)
*
|
2007-07-06 |
2014-06-03 |
Audience, Inc. |
System and method for adaptive intelligent noise suppression
|
US8194880B2
(en)
*
|
2006-01-30 |
2012-06-05 |
Audience, Inc. |
System and method for utilizing omni-directional microphones for speech enhancement
|
US9185487B2
(en)
*
|
2006-01-30 |
2015-11-10 |
Audience, Inc. |
System and method for providing noise suppression utilizing null processing noise subtraction
|
US8204252B1
(en)
|
2006-10-10 |
2012-06-19 |
Audience, Inc. |
System and method for providing close microphone adaptive array processing
|
JP4771532B2
(en)
*
|
2006-02-01 |
2011-09-14 |
オンセミコンダクター・トレーディング・リミテッド |
Echo prevention circuit and digital signal processing circuit
|
EP1860911A1
(en)
*
|
2006-05-24 |
2007-11-28 |
Harman/Becker Automotive Systems GmbH |
System and method for improving communication in a room
|
US8849231B1
(en)
|
2007-08-08 |
2014-09-30 |
Audience, Inc. |
System and method for adaptive power control
|
US8150065B2
(en)
*
|
2006-05-25 |
2012-04-03 |
Audience, Inc. |
System and method for processing an audio signal
|
US8934641B2
(en)
|
2006-05-25 |
2015-01-13 |
Audience, Inc. |
Systems and methods for reconstructing decomposed audio signals
|
US8949120B1
(en)
*
|
2006-05-25 |
2015-02-03 |
Audience, Inc. |
Adaptive noise cancelation
|
US8204253B1
(en)
|
2008-06-30 |
2012-06-19 |
Audience, Inc. |
Self calibration of audio device
|
US8259926B1
(en)
|
2007-02-23 |
2012-09-04 |
Audience, Inc. |
System and method for 2-channel and 3-channel acoustic echo cancellation
|
US8204249B2
(en)
|
2007-04-30 |
2012-06-19 |
Hewlett-Packard Development Company, L.P. |
Methods and systems for reducing acoustic echoes in multichannel audio-communication systems
|
US11856375B2
(en)
|
2007-05-04 |
2023-12-26 |
Staton Techiya Llc |
Method and device for in-ear echo suppression
|
US9191740B2
(en)
*
|
2007-05-04 |
2015-11-17 |
Personics Holdings, Llc |
Method and apparatus for in-ear canal sound suppression
|
US8526645B2
(en)
*
|
2007-05-04 |
2013-09-03 |
Personics Holdings Inc. |
Method and device for in ear canal echo suppression
|
WO2008137870A1
(en)
|
2007-05-04 |
2008-11-13 |
Personics Holdings Inc. |
Method and device for acoustic management control of multiple microphones
|
US10194032B2
(en)
|
2007-05-04 |
2019-01-29 |
Staton Techiya, Llc |
Method and apparatus for in-ear canal sound suppression
|
US11683643B2
(en)
|
2007-05-04 |
2023-06-20 |
Staton Techiya Llc |
Method and device for in ear canal echo suppression
|
JP2008306535A
(en)
*
|
2007-06-08 |
2008-12-18 |
Sony Corp |
Audio signal processing apparatus, and delay time setting method
|
US8005023B2
(en)
*
|
2007-06-14 |
2011-08-23 |
Microsoft Corporation |
Client-side echo cancellation for multi-party audio conferencing
|
CN101689371B
(en)
*
|
2007-06-21 |
2013-02-06 |
皇家飞利浦电子股份有限公司 |
A device for and a method of processing audio signals
|
US8189766B1
(en)
|
2007-07-26 |
2012-05-29 |
Audience, Inc. |
System and method for blind subband acoustic echo cancellation postfiltering
|
US7809129B2
(en)
*
|
2007-08-31 |
2010-10-05 |
Motorola, Inc. |
Acoustic echo cancellation based on noise environment
|
US8428661B2
(en)
*
|
2007-10-30 |
2013-04-23 |
Broadcom Corporation |
Speech intelligibility in telephones with multiple microphones
|
US8199927B1
(en)
*
|
2007-10-31 |
2012-06-12 |
ClearOnce Communications, Inc. |
Conferencing system implementing echo cancellation and push-to-talk microphone detection using two-stage frequency filter
|
US8744069B2
(en)
*
|
2007-12-10 |
2014-06-03 |
Microsoft Corporation |
Removing near-end frequencies from far-end sound
|
US8433061B2
(en)
*
|
2007-12-10 |
2013-04-30 |
Microsoft Corporation |
Reducing echo
|
US8219387B2
(en)
*
|
2007-12-10 |
2012-07-10 |
Microsoft Corporation |
Identifying far-end sound
|
US8180064B1
(en)
|
2007-12-21 |
2012-05-15 |
Audience, Inc. |
System and method for providing voice equalization
|
US8143620B1
(en)
|
2007-12-21 |
2012-03-27 |
Audience, Inc. |
System and method for adaptive classification of audio sources
|
JP4945429B2
(en)
*
|
2007-12-26 |
2012-06-06 |
株式会社東芝 |
Echo suppression processing device
|
US8194882B2
(en)
|
2008-02-29 |
2012-06-05 |
Audience, Inc. |
System and method for providing single microphone noise suppression fallback
|
US8355511B2
(en)
|
2008-03-18 |
2013-01-15 |
Audience, Inc. |
System and method for envelope-based acoustic echo cancellation
|
US8693698B2
(en)
*
|
2008-04-30 |
2014-04-08 |
Qualcomm Incorporated |
Method and apparatus to reduce non-linear distortion in mobile computing devices
|
US8385557B2
(en)
|
2008-06-19 |
2013-02-26 |
Microsoft Corporation |
Multichannel acoustic echo reduction
|
US8774423B1
(en)
|
2008-06-30 |
2014-07-08 |
Audience, Inc. |
System and method for controlling adaptivity of signal modification using a phantom coefficient
|
US8521530B1
(en)
|
2008-06-30 |
2013-08-27 |
Audience, Inc. |
System and method for enhancing a monaural audio signal
|
US7760869B2
(en)
*
|
2008-08-28 |
2010-07-20 |
Embarq Holdings Company, Llc |
Method and apparatus for controlling the transmit volume level of a speakerphone
|
DE102008055760A1
(en)
*
|
2008-11-04 |
2010-05-20 |
Siemens Medical Instruments Pte. Ltd. |
Adaptive microphone system for a hearing aid and associated method of operation
|
US8538008B2
(en)
*
|
2008-11-21 |
2013-09-17 |
Acoustic Technologies, Inc. |
Acoustic echo canceler using an accelerometer
|
TWI392241B
(en)
*
|
2009-02-18 |
2013-04-01 |
Realtek Semiconductor Corp |
Apparatus for processing echo signal and method thereof
|
JP2010259008A
(en)
*
|
2009-04-28 |
2010-11-11 |
Toshiba Corp |
Signal processing apparatus, sound apparatus, and signal processing method
|
US8219394B2
(en)
*
|
2010-01-20 |
2012-07-10 |
Microsoft Corporation |
Adaptive ambient sound suppression and speech tracking
|
US9008329B1
(en)
|
2010-01-26 |
2015-04-14 |
Audience, Inc. |
Noise reduction using multi-feature cluster tracker
|
US8718290B2
(en)
|
2010-01-26 |
2014-05-06 |
Audience, Inc. |
Adaptive noise reduction using level cues
|
CN102859591B
(en)
*
|
2010-04-12 |
2015-02-18 |
瑞典爱立信有限公司 |
Method and arrangement for noise cancellation in a speech encoder
|
US8473287B2
(en)
|
2010-04-19 |
2013-06-25 |
Audience, Inc. |
Method for jointly optimizing noise reduction and voice quality in a mono or multi-microphone system
|
US20120128168A1
(en)
*
|
2010-11-18 |
2012-05-24 |
Texas Instruments Incorporated |
Method and apparatus for noise and echo cancellation for two microphone system subject to cross-talk
|
JP2011160429A
(en)
*
|
2011-02-15 |
2011-08-18 |
Nippon Telegr & Teleph Corp <Ntt> |
Echo elimination device
|
US8804977B2
(en)
|
2011-03-18 |
2014-08-12 |
Dolby Laboratories Licensing Corporation |
Nonlinear reference signal processing for echo suppression
|
US9928824B2
(en)
*
|
2011-05-11 |
2018-03-27 |
Silentium Ltd. |
Apparatus, system and method of controlling noise within a noise-controlled volume
|
GB2493801B
(en)
*
|
2011-08-18 |
2014-05-14 |
Ibm |
Improved audio quality in teleconferencing
|
JP5845787B2
(en)
*
|
2011-09-30 |
2016-01-20 |
ブラザー工業株式会社 |
Audio processing apparatus, audio processing method, and audio processing program
|
CN102811310A
(en)
*
|
2011-12-08 |
2012-12-05 |
苏州科达科技有限公司 |
Method and system for controlling voice echo cancellation on network video camera
|
US8909990B2
(en)
|
2012-08-04 |
2014-12-09 |
Microsoft Corporation |
Historical software diagnostics using lightweight process snapshots
|
US9640194B1
(en)
|
2012-10-04 |
2017-05-02 |
Knowles Electronics, Llc |
Noise suppression for speech processing based on machine-learning mask estimation
|
US9083782B2
(en)
|
2013-05-08 |
2015-07-14 |
Blackberry Limited |
Dual beamform audio echo reduction
|
GB201309779D0
(en)
|
2013-05-31 |
2013-07-17 |
Microsoft Corp |
Echo removal
|
GB201309771D0
(en)
|
2013-05-31 |
2013-07-17 |
Microsoft Corp |
Echo removal
|
GB201309777D0
(en)
|
2013-05-31 |
2013-07-17 |
Microsoft Corp |
Echo suppression
|
GB201309773D0
(en)
|
2013-05-31 |
2013-07-17 |
Microsoft Corp |
Echo removal
|
US9536540B2
(en)
|
2013-07-19 |
2017-01-03 |
Knowles Electronics, Llc |
Speech signal separation and synthesis based on auditory scene analysis and speech modeling
|
US10289411B2
(en)
|
2013-11-18 |
2019-05-14 |
Microsoft Technology Licensing, Llc |
Diagnosing production applications
|
US9508359B2
(en)
*
|
2014-06-19 |
2016-11-29 |
Yang Gao |
Acoustic echo preprocessing for speech enhancement
|
DE112015003945T5
(en)
|
2014-08-28 |
2017-05-11 |
Knowles Electronics, Llc |
Multi-source noise reduction
|
US10924846B2
(en)
|
2014-12-12 |
2021-02-16 |
Nuance Communications, Inc. |
System and method for generating a self-steering beamformer
|
EP4270381A3
(en)
*
|
2014-12-28 |
2024-04-17 |
Silentium Ltd. |
Apparatus, system and method of controlling noise within a noise-controlled volume
|
US9712866B2
(en)
|
2015-04-16 |
2017-07-18 |
Comigo Ltd. |
Cancelling TV audio disturbance by set-top boxes in conferences
|
US9554207B2
(en)
|
2015-04-30 |
2017-01-24 |
Shure Acquisition Holdings, Inc. |
Offset cartridge microphones
|
US9565493B2
(en)
|
2015-04-30 |
2017-02-07 |
Shure Acquisition Holdings, Inc. |
Array microphone system and method of assembling the same
|
EP3295681B1
(en)
*
|
2015-05-15 |
2021-06-30 |
Harman International Industries, Inc. |
Acoustic echo cancelling system and method
|
US9659555B1
(en)
*
|
2016-02-09 |
2017-05-23 |
Amazon Technologies, Inc. |
Multichannel acoustic echo cancellation
|
US9653060B1
(en)
*
|
2016-02-09 |
2017-05-16 |
Amazon Technologies, Inc. |
Hybrid reference signal for acoustic echo cancellation
|
US10367948B2
(en)
|
2017-01-13 |
2019-07-30 |
Shure Acquisition Holdings, Inc. |
Post-mixing acoustic echo cancellation systems and methods
|
US10154148B1
(en)
*
|
2017-08-03 |
2018-12-11 |
Polycom, Inc. |
Audio echo cancellation with robust double-talk detection in a conferencing environment
|
CN108831496B
(en)
*
|
2018-05-22 |
2019-12-10 |
出门问问信息科技有限公司 |
echo suppression method and device, storage medium and electronic equipment
|
US10951859B2
(en)
|
2018-05-30 |
2021-03-16 |
Microsoft Technology Licensing, Llc |
Videoconferencing device and method
|
CN112335261B
(en)
|
2018-06-01 |
2023-07-18 |
舒尔获得控股公司 |
Patterned microphone array
|
WO2019239723A1
(en)
*
|
2018-06-11 |
2019-12-19 |
ソニー株式会社 |
Signal processing device, signal processing method, and program
|
US11297423B2
(en)
|
2018-06-15 |
2022-04-05 |
Shure Acquisition Holdings, Inc. |
Endfire linear array microphone
|
US11417351B2
(en)
*
|
2018-06-26 |
2022-08-16 |
Google Llc |
Multi-channel echo cancellation with scenario memory
|
US11310596B2
(en)
|
2018-09-20 |
2022-04-19 |
Shure Acquisition Holdings, Inc. |
Adjustable lobe shape for array microphones
|
US11558693B2
(en)
|
2019-03-21 |
2023-01-17 |
Shure Acquisition Holdings, Inc. |
Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
|
JP2022526761A
(en)
|
2019-03-21 |
2022-05-26 |
シュアー アクイジッション ホールディングス インコーポレイテッド |
Beam forming with blocking function Automatic focusing, intra-regional focusing, and automatic placement of microphone lobes
|
WO2020191354A1
(en)
|
2019-03-21 |
2020-09-24 |
Shure Acquisition Holdings, Inc. |
Housings and associated design features for ceiling array microphones
|
CN114051738A
(en)
|
2019-05-23 |
2022-02-15 |
舒尔获得控股公司 |
Steerable speaker array, system and method thereof
|
TW202105369A
(en)
|
2019-05-31 |
2021-02-01 |
美商舒爾獲得控股公司 |
Low latency automixer integrated with voice and noise activity detection
|
US11297426B2
(en)
|
2019-08-23 |
2022-04-05 |
Shure Acquisition Holdings, Inc. |
One-dimensional array microphone with improved directivity
|
US11552611B2
(en)
|
2020-02-07 |
2023-01-10 |
Shure Acquisition Holdings, Inc. |
System and method for automatic adjustment of reference gain
|
USD944776S1
(en)
|
2020-05-05 |
2022-03-01 |
Shure Acquisition Holdings, Inc. |
Audio device
|
WO2021243368A2
(en)
|
2020-05-29 |
2021-12-02 |
Shure Acquisition Holdings, Inc. |
Transducer steering and configuration systems and methods using a local positioning system
|
CN116918351A
(en)
|
2021-01-28 |
2023-10-20 |
舒尔获得控股公司 |
Hybrid Audio Beamforming System
|